I have a few times. Only for a few months at most though. The process of quitting sucks. Even after tapering my consumption of the course of a few weeks, when the time to stop came I felt like a helpless wet noodle of a human being for about two weeks until things kind of normalized. It did make the workday exceptionally tough to get through at first, especially since I was in a customer facing role at the time.

On the upside, it actually made mornings far better in terms of my energy level surprisingly enough. A lot of the grogginess of waiting until you've had a cup of coffee before you can function in the morning disappears and you can just wake up and start your day. Losing the ritual of drinking a cup of coffee was bittersweet though and I had to find other ways to start my day off on my terms.